State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition

Data updated May 2026

Total Bridges

27,743

Public highway bridges in Illinois

Good Condition

41.2%

11,426 bridges rated 7-9

-8.8pp vs 50% benchmark

Poor Condition

7.9%

2,186 bridges whose lowest applicable component is rated 0-4

0.9pp vs national avg 7.0%

Illinois vs national bridge condition

Illinois - Good condition share 41.2%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Illinois - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
Bridge inventory deck-condition mix - Illinois (FHWA NBI)

Counties (102)

Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222

Illinois vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.

RI

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

NE

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

IL

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

MA

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

MO

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

Bridges Needing Most Attention in Illinois

Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

FAS 1599

Poor

Over: DRAINAGE CANAL

2.2 MI E MEYER, Adams, IL

Built 1980 Load: 0.6 t ADT: 200

CH 15

Poor

Over: E FK MAZONRIVER

0.05 MI W CH 16, Grundy, IL

Built 1977 Load: 1.0 t ADT: 1,400

MOOSE RD - TR 240

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

OLD MARION RD

Good

Over: MUD CK

0.5 MI NE METROPOLIS, Massac, IL

Built 1977 Load: 32.4 t ADT: 1,600

AUGUST KRUEGER ROA

Good

Over: SEVENMILE CREEK

4.3 MI E ILL 145, Massac, IL

Built 1978 Load: 32.4 t ADT: 10

TR 59

Good

Over: SEN BECK DITCH

3 MI EAST MERMET LK, Massac, IL

Built 1979 Load: 32.4 t ADT: 175

TR 9

Good

Over: GEORGES CREEK

2 MI NE NEW COLUMBIA, Massac, IL

Built 1980 Load: 32.4 t ADT: 25

TR-58

Good

Over: SEN BECK DITCH

3 MILE SE MERMET, Massac, IL

Built 1980 Load: 32.4 t ADT: 150

CAANAN CH RD-TR 65

Good

Over: TRIB TO MASSAC CREEK

1.5 MI W OF IL 145, Massac, IL

Built 1981 Load: 32.4 t ADT: 175

COUNTRY CLUB ROAD

Good

Over: WEAVER CREEK

1.5 MI N METROPOLIS, Massac, IL

Built 1981 Load: 32.4 t ADT: 1,700

OLD MARION RD

Good

Over: WEAVER CREEK

1.2 MI N METROPOLIS, Massac, IL

Built 1982 Load: 32.4 t ADT: 1,800

UNIONVILLE ROAD

Good

Over: CRENSHAW CREEK TRIB

2.2 MI E US 45, Massac, IL

Built 1982 Load: 32.4 t ADT: 1,450

TR 121

Good

Over: FOUR MILE CREEK

1 MILE E OF IL 145, Massac, IL

Built 1983 Load: 32.4 t ADT: 125

TR 34A

Good

Over: PATERSON BRANCH

0.23 MI N IL 169, Massac, IL

Built 1993 Load: 32.4 t ADT: 25

SEILBECK RD

Good

Over: ICRR

.2 M W CH1, Massac, IL

Built 2012 Load: 32.4 t ADT: 50

SCHNEEMAN ROAD

Good

Over: Q DITCH

2.5 MI S OF MERMET, Massac, IL

Built 2011 Load: 32.4 t ADT: 100

POWERS CHURCH ROAD

Good

Over: SEVENMILE CREEK

4.1 MI N BROOKPORT, Massac, IL

Built 2016 Load: 32.4 t ADT: 100

FAU 9772

Good

Over: MUD CREEK

N METROPOLIS ST, Massac, IL

Built 1996 Load: 32.4 t ADT: 1,300

ILL 9

Good

Over: LITTLE CREEK

W EDGE BLANDINSVILLE, McDonough, IL

Built 2011 Load: 32.4 t ADT: 1,350

B'VILLE-COCHESTER

Good

Over: BAPTIST CREEK

S. CTR-34-T7NR4W, McDonough, IL

Built 1983 Load: 32.4 t ADT: 500

CH 18

Good

Over: TROUBLESOME CREEK

W CTR-28-T5NR3W, McDonough, IL

Built 1990 Load: 32.4 t ADT: 100

FAS 443-CH 16

Good

Over: TROUBLESOME CREEK

NW-19-T5NR2W, McDonough, IL

Built 1990 Load: 32.4 t ADT: 1,100

FAS 1437-CH 2

Good

Over: KEPPLE CREEK

CTR-20-T6NR1W, McDonough, IL

Built 1992 Load: 32.4 t ADT: 425

FAS 435 (CH 24)

Good

Over: Br Troublesome Creek

CTR-9-T4NR4W, McDonough, IL

Built 2014 Load: 32.4 t ADT: 275

FAS 438 - CH 21

Good

Over: DROWNING FORK

S.CTR-4-T7NR1W, McDonough, IL

Built 2003 Load: 32.4 t ADT: 200

FAS 1439 - CH 8

Good

Over: CEDAR CREEK

S.CTR-32-T6NR4W, McDonough, IL

Built 2005 Load: 32.4 t ADT: 175

FAS 444 - CH 10

Good

Over: BR CAMP CREEK

SW-22-T5NR1W, McDonough, IL

Built 2001 Load: 32.4 t ADT: 775

FAS-1441 (CH-22)

Good

Over: Branch of Camp Creek

S.CTR-28-T5NR1W, McDonough, IL

Built 2017 Load: 32.4 t ADT: 200

TR 414

Good

Over: DROWNING FORK

NW-3-T7NR1W, McDonough, IL

Built 1991 Load: 32.4 t ADT: 125

TR 45A

Good

Over: DROWNING FORK

SW-21-T17N,R1W, McDonough, IL

Built 1983 Load: 32.4 t ADT: 100

TR 55

Good

Over: BR DROWNING FORK

SW-30-T7NR1W, McDonough, IL

Built 2001 Load: 32.4 t ADT: 350

TR 312

Good

Over: FARMERS FORK CR

SW-33-T7NR2W, McDonough, IL

Built 1981 Load: 32.4 t ADT: 100

TR 338

Good

Over: E FK CROOKED CR

W.CTR-10-T7NR2W, McDonough, IL

Built 1986 Load: 32.4 t ADT: 50

TR 292

Good

Over: E.FORK LAMOINE RIVER

W-8-T7NR2W, McDonough, IL

Built 1987 Load: 32.4 t ADT: 25

TR 55

Good

Over: N.F.CROOKED CREEK

W.CTR-26-T7NR2W, McDonough, IL

Built 1991 Load: 32.4 t ADT: 75

TR 3A

Good

Over: N.F. CROOKED CREEK

N.CTR-3-T7NR2W, McDonough, IL

Built 1992 Load: 32.4 t ADT: 25

TR 55

Good

Over: SHORT FORK CREEK

W.CTR-29-T7NR2W, McDonough, IL

Built 1994 Load: 32.4 t ADT: 50

TR 338

Good

Over: SHORT FORK CREEK

SW-27-T7NR2W, McDonough, IL

Built 1995 Load: 32.4 t ADT: 50

TR 338

Good

Over: BR NORTH FK CROOKED

NE-28-T7NR2W, McDonough, IL

Built 1995 Load: 32.4 t ADT: 75

TR 250

Good

Over: TOWN CREEK

SW-23-T7NR3W, McDonough, IL

Built 1996 Load: 32.4 t ADT: 75

TR 7

Good

Over: E. FORK LITTLE CREEK

NE-12-T7NR3W, McDonough, IL

Built 2000 Load: 32.4 t ADT: 75

TR 74

Good

Over: LAHARPE CREEK

S.CTR-21-T7NR4W, McDonough, IL

Built 1981 Load: 32.4 t ADT: 25

TR 34

Good

Over: LAMOINE CREEK

SW-5-T7NR4W, McDonough, IL

Built 1985 Load: 32.4 t ADT: 25

TR 8

Good

Over: S. BR CROOKED CREEK

SW-18-T7NR4W, McDonough, IL

Built 1987 Load: 32.4 t ADT: 50

TR 25

Good

Over: BR LAHARPE CREEK

NE-22-T7NR4W, McDonough, IL

Built 1989 Load: 32.4 t ADT: 50

WEST ST (MS#5000)

Good

Over: LITTLE CREEK

W.CTR-32-T7NR4W, McDonough, IL

Built 1991 Load: 32.4 t ADT: 50

TR 82

Good

Over: S. BR. CROOKED CREEK

NW-15-T7NR4W, McDonough, IL

Built 1992 Load: 32.4 t ADT: 10

TR 140

Good

Over: BR LAHARPE CREEK

E-14-T7NR4W, McDonough, IL

Built 1994 Load: 32.4 t ADT: 25

TR 110

Good

Over: LAHARPE CREEK

W-23-T7NR4W, McDonough, IL

Built 1996 Load: 32.4 t ADT: 50

TR 8

Good

Over: LAMOINE CREEK

SW-6-T7NR4W, McDonough, IL

Built 2003 Load: 32.4 t ADT: 75

TR 39

Good

Over: Laharpe Creek

NE-28-T7NR4W, McDonough, IL

Built 2015 Load: 32.4 t ADT: 50

TR 141

Good

Over: N. BR OF CEDAR CREEK

NW-27-T6NR4W, McDonough, IL

Built 1989 Load: 32.4 t ADT: 25

TR 48

Good

Over: N. BR OF CEDAR CREEK

N1/2-32-T6NR4W, McDonough, IL

Built 1989 Load: 32.4 t ADT: 50

Showing 19,301-19,350 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.